I'm fairly sure this is the brand of tooling. I got it from a business selling out. It was labeled new and unused.(It easily feels that way, bearings are good and tight with factory assembly grease). Most of the pictures were lost so I took new ones with diagrams with the measurements of both ends of this unit. If you look closely at the pictures with the drawing with measurements you should be able to figure this all out. The 42mm nose on it is 18mm deep .Message with any questions..The last picture shows a measurement of 8mm or .315" for the end of it.(thats where the U5/16 number is).If you have any questions, just message me. If you think I'm off on the manufacturer of this, please inform me. I Know I'm low on the price, but that's a good deal for you. I will ship right away for FREE.   This item is being described as best I can, message with any questions before purchasing.

  If this sells Internationally we will accept returns but the Buyer will have to pay all shipping costs and take care of the return shipping and send a Tracking number to me.